Black Halo racing Underdrive Pulleys??
 

Im just curious to see if anyone has tried the new BHR pulleys and how you like them? Also if you plan on boosting, are pulleys a good mod to have with FI? Any feeback would be much appreciated..thank you

They are available is standard and underdriven. We have the standard set here on a car and the fit and finish is perfect. Personally I would never go with underdriven pulleys on a street car.

oh okay..do you think underdriven pulleys are overkill or just not good for engine life?

I just think the cons far outweigh the pros.

We are using the Agency Power Pulley on our RX8 that is street driven/ track driven. Haven't had any issues. Gains are not crazy by any means. The "butt dyno" seems to see improved response. We have seen dyno sheets showing a 9whp gain, But I would look at those with a grain of salt. Piece was made extremely well and even came with 2 belts to fit the now smaller setup.
https://cimg7.ibsrv.net/gimg/www.rx8...1df7adb0a0.jpg


https://cimg9.ibsrv.net/gimg/www.rx8...510099e485.jpg



https://cimg7.ibsrv.net/gimg/www.rx8...3a77b968ac.jpg

That is cool and all but this thread is about BHR pulleys.

then why change them at all?

Bling bling.